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diff --git a/rbxl-importer/src/app.py b/rbxl-importer/src/app.py
index 00a113c..b9788db 100644
--- a/rbxl-importer/src/app.py
+++ b/rbxl-importer/src/app.py
@@ -122,12 +122,23 @@ def analyze():
     blob = upload.read()
     if len(blob) > MAX_RBXL_SIZE:
         return jsonify({'error': f'file too large (> {MAX_RBXL_SIZE} bytes)'}), 413
-    if not blob.startswith(b'<roblox!'):
-        return jsonify({'error': 'not a .rbxl binary file (missing <roblox! magic)'}), 400
+    # Авто-детект XML vs Binary формата.
+    # Бинарный: <roblox!\x89\xff\r\n\x1a\n (magic bytes).
+    # XML (старые карты до 2010): <roblox version="4">...
+    stripped = blob.lstrip()
+    is_binary = stripped.startswith(b'<roblox!')
+    is_xml = stripped.startswith(b'<roblox') and not is_binary
+
+    if not is_binary and not is_xml:
+        return jsonify({'error': 'not a .rbxl file (no <roblox magic)'}), 400
 
     # Парсим
     try:
-        model = parse(blob)
+        if is_xml:
+            from rbxl_xml_parser import parse_xml
+            model = parse_xml(blob)
+        else:
+            model = parse(blob)
     except Exception as e:
         return jsonify({'error': f'parse failed: {e}'}), 422
 
diff --git a/rbxl-importer/src/rbxl_xml_parser.py b/rbxl-importer/src/rbxl_xml_parser.py
new file mode 100644
index 0000000..0807320
--- /dev/null
+++ b/rbxl-importer/src/rbxl_xml_parser.py
@@ -0,0 +1,342 @@
+"""
+rbxl_xml_parser.py — парсер XML-формата .rbxl (старые карты до 2010 года).
+
+Roblox-XML формат — текстовый предок бинарного .rbxl. Файл начинается с
+<roblox version="4"> и содержит дерево <Item class="...">...</Item>.
+
+Возвращает тот же `RobloxModel` что и rbxl_parser.parse — чтобы converter.py
+работал без изменений.
+
+Пример входного файла:
+    <roblox version="4">
+        <Item class="Workspace">
+            <Properties>
+                <string name="Name">Workspace</string>
+            </Properties>
+            <Item class="Part">
+                <Properties>
+                    <CoordinateFrame name="CFrame">
+                        <X>0</X><Y>10</Y><Z>0</Z>
+                        <R00>1</R00>...<R22>1</R22>
+                    </CoordinateFrame>
+                    <Vector3 name="size"><X>4</X><Y>1</Y><Z>2</Z></Vector3>
+                    <Color3uint8 name="Color3uint8">4286611584</Color3uint8>
+                    <token name="BrickColor">21</token>
+                </Properties>
+            </Item>
+        </Item>
+    </roblox>
+
+Поддерживает все типичные property-теги: string, bool, int, float, double,
+token, Vector3, Vector2, CoordinateFrame, Color3, Color3uint8, BrickColor,
+Content, ProtectedString, Ref, BinaryString, UDim, UDim2, Rect2D.
+"""
+from __future__ import annotations
+from typing import Dict, List, Any, Optional, Tuple
+import xml.etree.ElementTree as ET
+import re
+import base64
+import struct
+
+from rbxl_parser import Instance, RobloxModel
+from rbxl_types import (
+    Vector3, Vector2, Color3, CFrame, BrickColor,
+    EnumValue, PhysicalProperties, OptionalCFrame,
+)
+
+
+# Magic для XML-формата
+XML_MAGIC = b'<roblox'
+
+
+def is_xml_rbxl(blob: bytes) -> bool:
+    """Проверяет XML это или нет. Бинарный начинается с <roblox!..."""
+    stripped = blob.lstrip()
+    if stripped.startswith(b'<roblox') and not stripped.startswith(b'<roblox!'):
+        return True
+    return False
+
+
+def _text(el: ET.Element, default: str = '') -> str:
+    """Текст элемента (None → default)."""
+    return (el.text if el.text is not None else default).strip()
+
+
+def _f(el: ET.Element, default: float = 0.0) -> float:
+    """Float из text."""
+    try:
+        return float(_text(el, '0'))
+    except (ValueError, TypeError):
+        return default
+
+
+def _i(el: ET.Element, default: int = 0) -> int:
+    """Int из text."""
+    try:
+        s = _text(el, '0')
+        # Roblox иногда пишет '1.0' где ожидается int
+        return int(float(s)) if '.' in s else int(s)
+    except (ValueError, TypeError):
+        return default
+
+
+def _parse_vector3(el: ET.Element) -> Vector3:
+    x = _f(el.find('X'))
+    y = _f(el.find('Y'))
+    z = _f(el.find('Z'))
+    return Vector3(x, y, z)
+
+
+def _parse_vector2(el: ET.Element) -> Vector2:
+    x = _f(el.find('X'))
+    y = _f(el.find('Y'))
+    return Vector2(x, y)
+
+
+def _parse_cframe(el: ET.Element) -> CFrame:
+    """CoordinateFrame: 3 позиции + 9 элементов матрицы ротации."""
+    pos = Vector3(_f(el.find('X')), _f(el.find('Y')), _f(el.find('Z')))
+    matrix = tuple(_f(el.find(f'R{i}{j}'), 1.0 if i == j else 0.0)
+                   for i in range(3) for j in range(3))
+    return CFrame(position=pos, matrix=matrix)
+
+
+def _parse_color3(el: ET.Element) -> Color3:
+    """<Color3 name="..."><R>...</R><G>...</G><B>...</B></Color3>"""
+    r = _f(el.find('R'))
+    g = _f(el.find('G'))
+    b = _f(el.find('B'))
+    return Color3(r, g, b)
+
+
+def _parse_color3uint8(el: ET.Element) -> Color3:
+    """<Color3uint8>4286611584</Color3uint8> — packed RGB как uint32."""
+    val = _i(el, 0)
+    # uint32 = 0xFFRRGGBB (alpha=FF). r=byte2, g=byte1, b=byte0
+    b = (val & 0xff) / 255.0
+    g = ((val >> 8) & 0xff) / 255.0
+    r = ((val >> 16) & 0xff) / 255.0
+    return Color3(r, g, b)
+
+
+def _parse_property(prop_el: ET.Element) -> Tuple[str, Any]:
+    """Парсит один <тип name="имя">значение</тип>. Возвращает (name, value)."""
+    tag = prop_el.tag
+    name = prop_el.attrib.get('name', '')
+
+    if tag == 'string' or tag == 'ProtectedString' or tag == 'Content':
+        return name, _text(prop_el)
+
+    if tag == 'bool':
+        return name, _text(prop_el).lower() == 'true'
+
+    if tag in ('int', 'int64'):
+        val = _i(prop_el)
+        # В старом XML цвет хранится как <int name="BrickColor">21</int>,
+        # а converter ожидает BrickColor-объект с .code.
+        if name == 'BrickColor':
+            return name, BrickColor(code=val)
+        return name, val
+
+    if tag in ('float', 'double'):
+        return name, _f(prop_el)
+
+    if tag == 'token':
+        # token — int-значение enum
+        return name, EnumValue(value=_i(prop_el))
+
+    if tag == 'Vector3':
+        return name, _parse_vector3(prop_el)
+
+    if tag == 'Vector2':
+        return name, _parse_vector2(prop_el)
+
+    if tag == 'CoordinateFrame':
+        return name, _parse_cframe(prop_el)
+
+    if tag == 'Color3':
+        return name, _parse_color3(prop_el)
+
+    if tag == 'Color3uint8':
+        return name, _parse_color3uint8(prop_el)
+
+    if tag == 'BrickColor':
+        return name, BrickColor(code=_i(prop_el))
+
+    if tag == 'Ref':
+        # Ссылка на другой Item по referent (например "RBX42" или "null")
+        txt = _text(prop_el, 'null')
+        if txt in ('null', 'nil', ''):
+            return name, None
+        return name, txt  # храним как строку-referent
+
+    if tag == 'BinaryString':
+        # base64 → bytes
+        try:
+            return name, base64.b64decode(_text(prop_el))
+        except Exception:
+            return name, b''
+
+    if tag == 'UDim':
+        scale = _f(prop_el.find('S'))
+        offset = _i(prop_el.find('O'))
+        return name, {'scale': scale, 'offset': offset}
+
+    if tag == 'UDim2':
+        xs = _f(prop_el.find('XS'))
+        xo = _i(prop_el.find('XO'))
+        ys = _f(prop_el.find('YS'))
+        yo = _i(prop_el.find('YO'))
+        return name, {'x_scale': xs, 'x_offset': xo, 'y_scale': ys, 'y_offset': yo}
+
+    if tag == 'Rect2D':
+        # min/max
+        min_el = prop_el.find('min')
+        max_el = prop_el.find('max')
+        return name, {
+            'min': _parse_vector2(min_el) if min_el is not None else Vector2(0, 0),
+            'max': _parse_vector2(max_el) if max_el is not None else Vector2(0, 0),
+        }
+
+    if tag == 'OptionalCoordinateFrame':
+        cf_el = prop_el.find('CFrame')
+        return name, OptionalCFrame(cframe=_parse_cframe(cf_el)) if cf_el is not None else OptionalCFrame(cframe=None)
+
+    if tag == 'PhysicalProperties':
+        cust = prop_el.find('CustomPhysics')
+        custom = cust is not None and _text(cust).lower() == 'true'
+        return name, PhysicalProperties(
+            custom_physics=custom,
+            density=_f(prop_el.find('Density'), 0.7),
+            friction=_f(prop_el.find('Friction'), 0.3),
+            elasticity=_f(prop_el.find('Elasticity'), 0.5),
+            friction_weight=_f(prop_el.find('FrictionWeight'), 1.0),
+            elasticity_weight=_f(prop_el.find('ElasticityWeight'), 1.0),
+        )
+
+    if tag == 'NumberRange':
+        return name, {'min': _f(prop_el.find('Min')), 'max': _f(prop_el.find('Max'))}
+
+    # SharedString / Uri / другие незнакомые — оставляем как текст
+    return name, _text(prop_el)
+
+
+# Регекс для извлечения referent из строк типа "RBX42"
+_REF_RE = re.compile(r'^RBX(\d+)$')
+
+
+def _ref_to_int(ref: Optional[str]) -> Optional[int]:
+    """RBX42 → 42, null → None. Если уникальной номер не найден — None."""
+    if ref is None or ref == 'null':
+        return None
+    m = _REF_RE.match(str(ref))
+    if m:
+        return int(m.group(1))
+    return None
+
+
+def parse_xml(blob: bytes) -> RobloxModel:
+    """Главный entry: bytes → RobloxModel."""
+    try:
+        text = blob.decode('utf-8', errors='replace')
+    except Exception:
+        text = blob.decode('latin-1', errors='replace')
+
+    # XML может иметь BOM или leading whitespace
+    text = text.lstrip('').lstrip()
+
+    root = ET.fromstring(text)
+
+    instances: List[Instance] = []
+    by_referent: Dict[int, Instance] = {}
+    roots: List[Instance] = []
+
+    # Auto-increment id для Item'ов без referent (старые форматы)
+    next_id_counter = [100000]
+
+    def _walk(item_el: ET.Element, parent_ref: Optional[int]) -> None:
+        """Рекурсивный обход <Item class="..."> элементов."""
+        cls = item_el.attrib.get('class', 'Unknown')
+
+        # Referent из атрибута (например referent="RBX42")
+        ref_attr = item_el.attrib.get('referent') or item_el.attrib.get('Referent')
+        ref_int = _ref_to_int(ref_attr) if ref_attr else None
+        if ref_int is None:
+            # Назначаем auto-id чтобы converter мог отслеживать parent_referent
+            ref_int = next_id_counter[0]
+            next_id_counter[0] += 1
+
+        # Парсим properties
+        props: Dict[str, Any] = {}
+        props_el = item_el.find('Properties')
+        if props_el is not None:
+            for prop_el in props_el:
+                try:
+                    pname, pval = _parse_property(prop_el)
+                    if pname:
+                        props[pname] = pval
+                except Exception:
+                    continue
+
+        # Roblox в старых картах использовал имена с маленькой первой буквы:
+        # name → Name, size → Size, shape → Shape, и т.д. Converter ожидает
+        # PascalCase. Делаем алиасы (старое имя остаётся, новое добавляется).
+        _ALIAS_TO_PASCAL = {
+            'name': 'Name',
+            'size': 'Size',
+            'shape': 'Shape',
+            'archivable': 'Archivable',
+            'shape3d': 'Shape',
+        }
+        for old, new in _ALIAS_TO_PASCAL.items():
+            if old in props and new not in props:
+                props[new] = props[old]
+
+        # Convert Ref-properties (string "RBX42") в parent_referent если нужно
+        # — пока оставляем как строки.
+
+        inst = Instance(
+            referent=ref_int,
+            class_name=cls,
+            properties=props,
+            parent_referent=parent_ref,
+            children=[],
+        )
+        instances.append(inst)
+        by_referent[ref_int] = inst
+        if parent_ref is None:
+            roots.append(inst)
+
+        # Рекурсивно дочерние Item'ы
+        for child in item_el.findall('Item'):
+            _walk(child, ref_int)
+
+    # Roblox-XML: top-level <Item class="..."> идут под <roblox>
+    for item in root.findall('Item'):
+        _walk(item, None)
+
+    # Заполняем children после полного прохода (для удобства converter'а)
+    for inst in instances:
+        if inst.parent_referent is not None:
+            parent = by_referent.get(inst.parent_referent)
+            if parent is not None:
+                parent.children.append(inst)
+
+    # Версия из атрибута <roblox version="4">
+    version_attr = root.attrib.get('version', '4')
+    try:
+        version = int(version_attr)
+    except ValueError:
+        version = 4
+
+    return RobloxModel(
+        version=version,
+        class_count=len(set(i.class_name for i in instances)),
+        instance_count=len(instances),
+        instances=instances,
+        by_referent=by_referent,
+        roots=roots,
+        shared_strings=[],
+        meta={},
+        warnings=[],
+    )